Jesse buys his coworkers lunch from the local steakhouse. The food cost $105.79, and the sales tax rate is 9%. Jesse wants to leave a 20% tip based on the pre-tax amount. How much will the total be, including tax and tip? (1 point)
To find the sales tax amount, multiply the food cost by the sales tax rate: $105.79 * .09 = $<<105.79*.09=9.53>>9.53
To find the tip amount, multiply the pre-tax cost by the tip rate: $105.79 * .2 = $<<105.79*.2=21.16>>21.16
To find the total cost including tax and tip, add the food cost, the tax amount, and the tip amount: $105.79 + $9.53 + $21.16 = $<<105.79+9.53+21.16=136.48>>136.48. Answer: \boxed{136.48}.